Not Able to Find ESRI.ArcGIS.Client For ArcGIS Runtime .Net SDK on WPF Samples

I am trying to re-produce the demonstrated sample at thislinkbut I am not finding theESRI.ArcGIS.Clientany where in .Net Runtime SDK references or even from "Add ArcGIS Reference" wizard from Arc Object tools but still not seeing anyESRI.ArcGIS.Client

The dlls reference you are looking for is in the old (now retired) ArcGIS Runtime SDK for WPF. But you can implement exactly the same functionality as that sample shows in the current ArcGIS Runtime SDK for .NET v100.1.